Land Rover Battery Key Replacement / Range Rover Key Battery Post category:Discovery Sport / Land Rover / LR3 / DIscovery 3 This video shows how to replace the battery in a Land Rover Key Fob. Replacing the battery requires no tools and can be done in under a minute. The battery is model 2032 and is very common. you do not need any tools to change the key battery. You Might Also Like Install Clear Side Marker Lights for the LR3 & Range Rover Sport December 11, 2019 LR3 Oil Change December 17, 2019 LR3 Mass Air Flow Sensor Clean or Replace December 17, 2019